That's for max frequency on a given process node. Power scales with voltage squared. But that doesn't say anything about wasted power. And dynamic scaling screws that up in modern chips.
I believe I could summarize things by saying the only way you can really save energy* doing the same work+ is by using a different semiconductor process (either power/leakage-reduction-focused or smaller).
* For serious values of "energy"
+ Where the same work is not always true for a given task, if one optimizes an algorithm
I believe I could summarize things by saying the only way you can really save energy* doing the same work+ is by using a different semiconductor process (either power/leakage-reduction-focused or smaller).
* For serious values of "energy"
+ Where the same work is not always true for a given task, if one optimizes an algorithm